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TOPIC: Hydraulic lifters
#17411
Big Bear (Moderator)
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Hydraulic lifters 5 Years, 3 Months ago  
What gives? I bought my star under the impression that it required a valve adjustment every 16,000 miles. I stopped by my dealer today (bought a new hat ), walked by the R*'s ,and hanging on the bikes is a sales "tag" that give you a short list of some cool feature of the bike. After braided cables,102 c.i. etc,etc, reads hydraulic lifters and belt drive for less maintenance.
My question then is , if it has hydaulic lifters, why does it need adjusting (as that is the purpose of hydraulic lifters)?
My suzuki LC1500 intruder had hydraulic lifters, no adjustment required!
My Honda shadow sabre had hydraulic lifters,no adjustment required!
All my vehicles with hydraulic lifters need no adjustment, so what gives!
Fill me in.
 
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#17417
StarMyram (User)
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Re:Hydraulic lifters 5 Years, 3 Months ago  
I beleive that in your owners manual it says to "CHECK" the valve adjustment and only adjust "IF necessary". Roadie's probably won't need any valve adjustments if everything is working as it should. But you just want to make shure the lifters are not "out of range." If they are not able to compensate you'll know if there's a proplem. Too tight and you'll burn your valve seats. Too loose and it'll be tickin like a tapdancer.
They just want you to CHECK your valve adjustment every 16,000 miles to avoid cosly engine damage, that's all. (It covers the engineer's butts.)
 
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#17419
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Re:Hydraulic lifters 5 Years, 3 Months ago  
It is uncommon, but in car engines with hydraulic lifters there have been cases where the lifter starts to "cup" and ends up eventually wiping the lobe off the cam. (This would be very rare, but possible in a motorcycle engine too.)
I think Yamaha just wants us to CHECK our valve adjustments, as
a preventive-maintenance measure to avoid problems down the road... Just like checking your tire pressures before a long ride.
 
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#17420
Big Bear (Moderator)
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Re:Hydraulic lifters 5 Years, 3 Months ago  
Funny, Honda nor Suzuki had you poking around inside your engine "just to be on the safe side".
I'm a Mopar guy (should explain alot), and I've never just stuck my head inside my 318/360 SB just for the heck of it.
I've owned many bikes that required a valve adjustment, but they didn't have hydraulic lifters in them. I've also worked at an auto shop, and done many head jobs from burned valves,so I know what can happen to a out of spec valvetrain. But the whole point is , why put in hydraulic lifters if you NEED to adjust anyway. Nobody's that stupid (are they?).
 
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#17422
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Re:Hydraulic lifters 5 Years, 3 Months ago  
Each lifter operates 2 valves. You're adjusting the difference between the valves so they are both in sync.
 
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#17424
StarMyram (User)
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Re:Hydraulic lifters 5 Years, 3 Months ago  
That a boy Musky! I think you hit that nail right on the head!
It makes total sense, the Honda and Suzuki probably only had 2 valves per cylinder,
therefore on the Roadie if one exhaust valve wore faster than the other (on the same cylinder) then the lifter would not be able to compensate for it and subsequently allow the one tighter valve to burn.
Musky just has a way with words! (and brains! )
 
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#17433
Big Bear (Moderator)
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Re:Hydraulic lifters 5 Years, 3 Months ago  
I don't know about the suzuki, but the honda was 3 valves per cylinder.
 
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#17581
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Re:Hydraulic lifters 5 Years, 3 Months ago  
Hmmmmmm, ....maybe Honda has indestructible valves.
(Well anyways, I'm not going to stress myself about my Roadie's valve adjustments. And I'm not going to bother opening the engine up until I know that there is in fact a problem in there.)
I am sure it'll let me know if theres a problem if I keeps me ears open for odd sounds.
Musky stated that you check for the two valves to both be in sync with each other.
Any chance some of the suspected Sticky Valve Syndrome cases are actually valves out of sync. ???
 
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#17715
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Re:Hydraulic lifters 5 Years, 3 Months ago  
Don't worry StarMyRam, I'm not stressing either, I just find it ironic that something with hydraulic lifters needs adjusting (at 210.00 dollars at that, just to be sure).
 
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#17751
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Re:Hydraulic lifters 5 Years, 3 Months ago  
I agree at 10K miles,I won`t worry till I start hearing something out of place.
I remember the 1st time I took my ear plugs out after a 110 miles and THEN heard the engine.It`s not like its completely silent running.You can hear everthing going on in the engine, like a fine watch only LOUDER

Hey Big Bear nice color on the Bike 2006 Candy Reds Rule <br><br>Post edited by: vegasdave, at: 2007/02/19 10:14
 
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